On electrocoalescence of water droplets in an insulating liquid

Author

Atten, P.

Author_Institution

CNRS Lab. d´´Electrostatique et de Materiaux Dielectriques, Grenoble, France

fYear

1992

fDate

4-9 Oct. 1992

Firstpage

1407

Abstract

The basic processes leading to coalescence of small droplets of conducting water dispersed in an insulating liquid are examined in the case of an emulsion flowing between two coaxial cylindrical electrodes and subjected to an electric field. The formula giving the interaction force between two droplets and the equation governing the evolution of a polydispersed emulsion are first recalled. Expressions are derived for the coalescence rate when only the field-induced interaction between droplets is retained, and the characteristic coalescence time is estimated. It is proposed that the shear rate plays a major role in bringing the droplets into contact.<>

Keywords

drops; electrodes; electrohydrodynamics; emulsions; shear flow; EHD; coaxial cylindrical electrodes; conducting water; electric field; electrocoalescence; electrohydrodynamics; emulsion; insulating liquid; interaction force; shear rate; water droplets; Coaxial components; Corrosion; Dielectric liquids; Dielectrics and electrical insulation; Electrodes; Equations; Kinetic theory; Lead; Petroleum industry; Sediments;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1992., Conference Record of the 1992 IEEE

Conference_Location

Houston, TX, USA

Print_ISBN

0-7803-0635-X

Type

conf

DOI

10.1109/IAS.1992.244253

Filename

244253